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authornikolay@redhat.com <nikolay@redhat.com>2013-08-03 22:07:46 +0200
committerDavid S. Miller <davem@davemloft.net>2013-08-05 12:17:42 -0700
commit0369722f024cd374f74eac6d261014403aa27ea2 (patch)
treed73398ccd7bae3ad0a60405f71259f77c8eca430 /net/8021q
parentd9af2d67e490b48f0d36f448d34e7bab9425f142 (diff)
vlan: make vlan_dev_real_dev work over stacked vlans
Sometimes we might have stacked vlans on top of each other, and we're interested in the first non-vlan real device on the path, so transform vlan_dev_real_dev to go over the stacked vlans and extract the first non-vlan device. Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q')
-rw-r--r--net/8021q/vlan_core.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 4a78c4de9f20..6ee48aac776f 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -91,7 +91,12 @@ EXPORT_SYMBOL(__vlan_find_dev_deep);
struct net_device *vlan_dev_real_dev(const struct net_device *dev)
{
- return vlan_dev_priv(dev)->real_dev;
+ struct net_device *ret = vlan_dev_priv(dev)->real_dev;
+
+ while (is_vlan_dev(ret))
+ ret = vlan_dev_priv(ret)->real_dev;
+
+ return ret;
}
EXPORT_SYMBOL(vlan_dev_real_dev);

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